Electrocution can be many things, not only instant water heating.

The was I remember was the Empire shopping mall.

Because people here in this forum mostly marketing electrical, and solar only. And they don't sell.

Gas is still best bang for buck. And go for RINNAI.

All storage heater piping will be earth. Make sure house earth cable are working. I earth all my ss piping.

Even solar can be dangerous if electric leak. Imagine a live wires touches the steel / copper pipe. These can happen when rats bit the cables and it touches the pipes.

Storage tank have earth wires.

The key is to have your house earth wire working. Without Earth is without protection.

Haha... like that also can. I got no comment already.

Haha... like that also can. I got no comment already.

No need to pampered, no astro, no internet, no smart phone, no need electicity.. Last time without all these also can survived...

All there are Standard of living..don't have won't die ma... So go without it lo

If the resistance level if earth are higher than the water path electron will flow via less resistance.

The other possibility is the instance water heater are leaking, and the leak flow from live to water and to the human body while earth could be high resistance.

High rise building earth have one issue, high resistance if not maintain.

This post has been edited by weikee: Sep 13 2013, 11:30 AM

I gave back most of my E&E knowledge to the collegue. Here some good slide for reference.

http://fyi.uwex.edu/mrec/files/2011/04/W4....ng-MREC2010.pdf

http://www.suparule.com/docs/earth_ground_...g_technique.pdf

Car build with 7 airbags will have death cases. Everythings are not 100% safe.

For the Instant Water heater design point of view, earth / ground have to work. If grounding have higher resistance compare to the the water, live current will go to the water and not earth.

Manufacture will produce product with minimal basic security, any add on will required more $$$ and transfer the cost to consumer. Even with state of the art technology, no one can prevent accident.

I do agree the manufacture need to look into another design. But if I recall, my mom house water heater can't be switch on if the earth are faulty and this are basic things. I remember this when I wire the water heater and forgot to wire the earth.

Since I am going to change the heater soon (after 5 years), i shall do another test again.

BTW, I change instant water heater every 5 - 6 years. That another preventive maintenance I do.

Is not that bad. As long get proper brand, and good installer.

BTW another fault point many did not look at. The water pump also risk electric leakage. And that will cause electrocution too. So no water pump? Solar users also use pump.

Gas heater is price in between storage and solar. Is more expensive than storage but cheaper than solar. All three still need copper piping.

Storage tank got pressure valve.

We know speeding is dangerous people still drive like f1 driver. Everyone know tires need to change when reach certain level but some drive until tyres botak.

I read many people asking where can I buy cheapest instant heater, who can give cheapest installation price. You think they care about safety? The priority for them is saving money.

Any type of water heater be it solar, gas, insrant we install will sure have some sorts of danger. Get proper installer and don't skim on quality of work.

Just like car radiator cap, you don't read anywhere it jammed and cause hose burst. you read more of the cap leak

Jammed can be few reason,
some use cheap valved made of cheap spring that rust, no proper protection making small object like insect go in, damaged by other object, like knocked by objects.
I do see some rubber-less valve that are very reliable and leak proof.

Like I mention in previous page, nothing is 100% safe, we can reduce the risk by doing proper things, and invest more in good product and installer. But difference people have difference preference in saving vs safety.

Do you want to pay RM 1,000 to get 85% safety, or pay RM 10,000 to get 90% safety, or pay RM 50,000 to get 95% safety?

This post has been edited by weikee: Sep 19 2013, 12:04 PM

Because the hose are due for replacement.

Radiator cap won't jammed. Unless is the cheapo cap the spring will rust and not made to spec. I drove car > 10 years all still with original cap. Usually it will leak can causes lower coolant boiling point